Mining-machine.



C.- E. DAVIS.

mums MACHINE.

APPLICATION FILED MAY 25. I914.

Patented Oct. 23, 1917.

B SHEETS-SHEET I,

zabdilyar C. E. DAVIS.

MINING MACHINE.

' APPLICATION FILED 11AY25.19|4.

"Patented Ot. 23,1917.

WU WF MR vQW gm,

c. E. DAVIS.

MINING MACHINE.

7 1 OJ 1 om 2 t G 0 d B t D m x a D M M. .m 2 V. A H 0 E L H .0 H A c H P P A in? H. J 2% a r QM m w 'C. E. DAVIS.

mums MACHINE.

I APPLICATION FILED MAY 25. 1914. I 1,244,178. Patented 00 23,1917

8 SHEETS-SHEET 6- UNITED STATES PATENT QFFICE.

CHARLES E.,II)AVI[S OF CHICAGO, ILLINOIS, ASSIGNOR TO GOODMAN MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MINING-MACHINE.

' Specification of Letters Patent.

Application filed May 25, 1914. Serial No. 840,652.

. To all whom it may concern Be it known that I, Cnnimns E. DAVIS, a

' citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Miningdvlachines, of which the following is a specification.

This invention relates to mining machines and has for its object to provide a new and improved device of this description.

One of the objects of my invention is to provide a mining machine particularly adapted to be used in making cutsat various heights as desired.

The invention is illustrated in the accompany'mg drawings, where1n- -Figu1es 1, 2, 3, 4, 5 and (S are; diagramvarious positions 20 the mining {nachine in uring the operationv of making the out; I

Fig. 7 is a side elevation with; a portion matic viewsjshowinti;

broken away showing one form of mining device embodying the invention;

Fig. '8 is a plan view partly in cross section of the mining machine illustrated in fFig. 7;

Fig. 9 is a rear view of the mining machine illustrated in. Fig. 7

11-11 of Fig.

' 12 12 of Fig. 10';

Fig. is a sectional view 1 Fig. 10 is a sectional viewtaken on line 10 -10 ofFig.7;

Fig.'11 is a sectional view taken on line Fig. 12 IS a sectional view taken on lme -"Fig. 13 is a sectional view taken on line 13-43 of Fig. 10; r Fig. 15L is a'sectio-nal viewtaken on line 14--14j0f Fig. 11;

on line taken 15-45 of Fig. 8;

Fig. 16 is a sectional view taken Fig. 17 isa' sectional view taken 17-.17 of Fig. 16,

Fig-l8 isa sectional view taken on line on line theframe of the cutting element;

a Fig. 20' is aview similar to 'Fig. 1-9 as:

1" .'21'is'a view in .iart s ectioll howf in ing the top of the support folded down;

' nected with a cross shaft 5 3 frame 1 is a beveled provided with a hollow 'hub 14 containing the lugs 15, the'hubs of thetwo gears'being;

[in *alinement. {hebeveled gear 13 con- -95 nects with a beve on line the driving connection from the motor shaft on the moving frame to 'the parts driven by said motor;

Fig. 22 is a sectional view taken on line 2222 of Fig. 21; I

Fig. 23 is a view taken on 1ine23-23'0f Fig. 22.

F ig. 2 is a sectional view taken on line 2424 of Fig. 7. g

Like numerals refer to like parts' 'throughout theseveral figures. i

As illustrated in the drawing the machine is made up of three general elementscomprising a base frame 1, a pivoted or rocking frame2 and acutting elementfi. The-base frame 1 is preferably mountedupon wheels which run upon a track: The rocking or moving frame 2 ismounted 'on their'aine 1 and is arranged so that it may given both angular and longitudinal movement as the machine is makingits-cut. The eutting element is movably mounted upon su ports which are attached to the 'rockingilrame. 76 The moving frame 2 carries a motor t'which. is arranged so that it may be used to move the entire device along the rails or: for rock ing the. rocking frame. As hereineshown, the motor 4 is mounted upon the rear end of '80 the rocking frame and 1S 0 eratively. conee Figs. .7 and 8). The shaft 5 is. connected by. pinion '6 l and gear 7 with a shaft Sqvhich carriesa beveled gear 9. a This beveled gear engages 815 a beveled gear 10 (see Figs. 881K115), said 3 beveled gear having a hollow hub 11 which works in' a bearingon. the rocking irame.

This hollow hub is 'provided withth e' inwardly projecting lu'gs I2. below the hub 11 and 'mounted upon 'e-"base gear 13 which is also edgear fi-i'nounted -on' the shaft 17; carried-My the use frame; The

. shaft 1 7 is operatively lmneot'ed with'the wheels, of the by of, the chains. or belts 18 andll'gsoath-at whmi said a -em m be 'f mii l b the me er Th "1 are" normally bubs gears 10 and 13' are connected together by a removable connecting-(piece or post 21, which is provided at each en with grooves for the lugs 12 and 15 on the gear hubs. It will be seen that when the connecting piece is dropped into the hollow hubs it then con-' neets the gears 10 and 13 together and when it isreinov'ed it disconnects them. The con heating device is provided with a handle 22 for controlling it. The shaft 8 is connected by the gear 23" with the gear 23 mounted upon the sleeve 25 rotatably mounted upon the shaft 25. (See Figs. 8, 15, 21, 22 and 23.) The shaft 25 carries the worm 26 meshing with the worm gear 27. carried by the sleeve 28 on which is'mounted the drum 29 to' be used for winding the rope or other power transmitting device 30, adapted to be attached to a fiired part to move the cutter of the machine intdthe coal in inaking the first part of its out Loosely mounted upon the sleeve is a gear 31 which meshes with the gear 32 on the shaft 34 having a worm 35 which en ages a worm gear 36 connected withthe giaft 37 mounted u on the moving frame. This shaft isprovitihd with a gear 38 which meshes with the teeth 39 of a rack or gear 40 fixed to the base frame 1. Some suitable means is provided for controlling these connections. As herein shown there is slidably mounted upon the sleeve 25 a clutch member 24 which is feathered to the sleeve and which is controlled 'by the handle 24. This clutch member is adapted to be brought into engagement with an opposed uclutch member 24 fastened to the shaft 25.

It will be seen that when the clutch members 24 and 24 are brought into engagement, the

shaft 25 will be rotated and when they are moved out of engagement the shaft 25 will disconnected from the motor. ,,T-he1e is also slidabl. mounted upon, the sleeve 25* a clutch mem er 33.. The end 33' of the gear '31 is formed as a cooperatingclutch memshandle 33 berso thatwhen the member 33 isslid along the sleeve it will engage the clutchmembcr on the ear and cause said gear'to. be rotated. his movement of the gear by means of gear 32.: causes the rotation of shaft 34. The clutch member 33 is controlled by the A movable connecting device 41 connected with the rocking frame 2 and: the 'base frame 1. This mnnecting dcvice, as herein shown. surrounds the shaft 3,?

passes in the Space 20 between the gears 10 frame.

and 13 and is provided with an opening adapted to reglster with the' openings in the hollow hubs of said gears when the moving frame is in a predetermined position and in the present case, this is when the moving frame is in the entral position parallel with the base frame When in this position the post 21 can be inserted to connect the two gears and will pass through the opening 46. The clutch 33 has connected therewith a part 47 (See Figs. 8, 9 and 15) arranged so that when the clutch is thrown, to connect gear 38 with the motor, the part 47, which is located in s ace 20 will project across the openings in t ie gears 10 and 13, thereby preventing the post 21 from being inserted and making it impossible to connect the motor with the driving wheels of the base frame, while the moving frame is operatively connected with the motor. The gear or curved rack 40 has its middle portion depressed, that is, the part 4Q containing the teeth, projects above the face of the remamingportion and the'connectin'g piece 41 is bent downwardly, a shown in Fig. 15 so that a porti'olith ereof iscontained within the depressed portion of this gear. moving frame 2 carries the cutting element and has a pivotal or rocking connection with the base frame. As herein shown, the moving frame 2 is provided withza pivot 4'1 which has a sliding 1pivotal connection with the base frame 1. his pivot projects into slots 48 and 49 in the base frame, the slots having the "uiding faces 50 and 51 which are engaged by the pivot. As herein shown, the pivot is provided with a roller 52 which engages these guiding faces. The slots 48 and 49 are under cut so as to form recesses 53 and 54 beneath the guiding faces 50 and 51. Connected with the pivot 47 is a removable holding piece 55 which-slides along these recesses, the edges of the' plate pro.- jccting beyond the guiding faces 50 and 51 and engaging the under faces 56 so as to prevent the moving frame f rom beingliftcd upwardly so as to disengage it from the base It will be noted that the slots 48 and 49 start from the outer edges of the base frame'and meet near the middle thereof and as the moving frame is rocked the pivot 47 passes along one slot, say for example, the slot 48 going toward the center and is then switched into the slot 49 and moved away from the center. I provide a suitable switching'device for this purpose. As herein shown,- this switching device consists of a switching cam or part 57 connected with the moving frame back of the pivot 47-at the. At t there are rearwardly projecting engaging faces, 58 and 59. Asthe pivot reaches this central position, the further rocking movement of the moving frame causes the switch-' ii int where the-slots 48'and '49 meet;

Thev e meeting point of the convcrging'slots' ing part 57 to engage one of these faces and switches the pivot from one slot to the other.

a For example, if the pivot is moving along slpgdg toward the center, when it reaches ,t he ten fiwher re the two slots ,meet, the {,sWitchm .part.57 engages the face 58. At

' ,th is-poini the moving frame has reached the of its fbackward movement and then begins? to move forward and the switching ;.partg57 engages the face 58 causes the pivot tobe moved to avoid the point 60 and pass j 1 the slot 49.1 If the pivot is moved inthe opposite direction, that is, is in slot 49 and is, moving toward the center, when it reaches it the center the switching part 57 engages the face fiil andswitche's't e pivot into s ot 48. Ihe rear end of the machine moves in an opposits directionirom the pivot itself as this pivot moves from side to side of the machine. When thepivot for example,- moves to the leftof the center-line the rear end of the machine moves to the right of the center line, and vice versa, thereby insuring a proper balance of the machine. InfvicW of thefact that the cut is made abovezthe base frame, the cuttings therefrom fall into the 5 slots 48 and 49 and some suitable means is ,rovided for cleaning, out these slots. As

erein, shown, a cleaner 61 is placed ahead of thetpii ot 47. This cleaner has two proarms 62 as shown, the ends of which siongthe faces and 51 (see Fig. 10). hecleaner pivotally L'mountedfl upon the iyot 47tand has connected with it a part- 3 5 3 provided with lugs 64 adapted to engage a the pin .65 so. as to limit the movement of the cleaner,-( see Figs. 11- and 14:). The cleaner aslprovided with a lojection 66 which is nga ge 'iby aycontro ling device 67 mounted Qonttheppin 68 which connects the plate with thetirocking frame; This controlling adevieeis provided with the projecting parts drassthepivotpasses from one of the 1;? *4 .9r- 4;9.--to the. other, one of these prole'tmg -phrts engages. the 'point60 and co uses -.tlie' cleaner to'be moved so that .it extends directlyixiieross the slot into which it is then moved; that is, to the osition shown F5 :0. It willtherefore' seen that as 47% is ltransferred from slot 48 to i r-viceversay, the cleaning device is lptnndtdmove'ahead of the pin so as to ntemeltmatmay betherei The. pivoted or moving. frame 2' is proideazwithisilppqrts'upon which the cutting jisnmoyably mounted so that said l mcpt nay be, moved up and down.

. "shown, ther'e'are two of these PRW fing pi ces; one on. each side, the cutautome'tibitllychanged to extend across the he 'fslotjof cuttings,- dirt orflother' matints-element?) beingsmounted between them. 7

1 construction. shown, each supporting sists, of' the stationary upwardly 70 {whichamfixea to the frame 2. Hinged to the rojecting parts70 are the hinged arts Z 1, t 1e hinged parts 71 being connecte' together at the top by the piece 72. The parts 70 and 71 are provided with rack teeth 73 on their inner faces, 70 which are engaged by pinions 74 mounted on shafts 75 rotatably mounted upon the cutting elemcnttsee Fig. 8). It will be seen that when the pinions 74- are rota ted the cutting elen'icnt may be moved up and down 25 between its supports. The parts 71 are hinged to the parts 70 in any desired manner so that they may be folded downwardly after the cutting element has been-moved below them so as to lessen the head room of the entire machine and facilitate its move ment into and about the mine and into places having low roofs or obstructions at the top. In the construction shown a shaft 70 is associated with each supporting device at the opposite sides of the cutting element, each shaft passing through lugs on the parts 70 and 71 (see Figs. 7, l9 and 20). Each shaft is provided with a handle 77 which has a spring lock 78 adapted to lock it to the locking part 7 9 on one oi. the parts 71 (see Fig. 7) above the points where the parts 71 engage the parts 70. Suitable interlocking devices are provided to lock them in position. As shown in Figs. 1 9 and 20 the fixed parts 70 are provided'with the pr0jec-' tions 80, while the hinged parts 71 are pro vided with the projections 81. I When the parts'TO and 71 are intheir operativeposition in alinel'nent, these parts 80 and 81 i'nterlock as shown in Fig. 19 and hold the two parts in proper rigid relation. When it is desired to fold the parts .71 down, the shaft 7 6 is: rotated. This shaft is provided with the eccentrics 82, one associated with each piece 71. When the locking device 78 is then disconnected from the locking device 79 and the shaft rotated by handle 77, these eccentries movethe parts 71 so as to disengage the interloclring parts 80 and 81 (see Fig. 15)). Thepart. 71 may then be folded down so as ---to be.parallel,,with the part 70 as shown in Fig, 20. hen the parts 71 are moved u in alinement with the parts 70 and the sha t is again moved back to its initial 'po'sition'115 shown in Figs. 7 and 19, the parts 80 and 81 are interlocked and the proper rigidity se-' cured. The shafts 75 carrying the pinions 74, the

rotation of which cause the cutting elennmt 1 20' provided with the worm gears 83 which engage worms 84 on the shaft 85 '(see Figs. 8, 9, and 16-). ,Theshaft85 is provided with a worm, ear-86 which engagesa-worm 87 on ajsha 11-88. This shaft is provided with 'affriction clutch member 89 feathered'on the j shaft and which enga es a friction clutch member 90. The clutci member 89 is controlled by a rock shaft 91 rotatably mounted on supports 91 and carrying the arms 89 connected with a member 92 which engages trically, that 1s, from onejace" thereof. 70 the grooved sleeve 93 connected with the Since, thcrcfore the otherboundar of the clu'tclrpielnber. The shaft- 91 is rocked by cutting element shown at 123 ,Fig. l is at'a means pf a crank 94 to which is attached a distance from the plane 'of the cuttin arm, link 95 fastened to the end of a lever 96 it will be seen that when the cutting e ement pivoted'at '96, said lever being connected is moved to its-lowest position, the cuttin 76 v through a pin and SlOiJQOllllCCtlOll to a lever arm will be some distance above the'pivote 98 pivoted to the frame at 9'? (see Figs. 8, rocking frame 2. In order, to secure a 9 and 16) and which projects beyond the greater range through which um cutter may frame of' the machine and is provided with am, I make the cutting element reversible a handle. This handle has a pawl 99 which so that when 'it is desired to cut low down, 80 engages a ratchet 100 so that they may be the cutting element can. be reversed so that held in any desired position. I the cutter arm will'he at the bottom instead It will be seen that since the link 95 is of atthe top. 'lihis reversing is done by connected with the leven 96' beyond its pivot, mowing the cutting element out from be"- the shaft 91 will be rockedwhcn the handle tween its supports and turning it over so '85 98 of the lever is moved so as to movethe that the cutting arm takes the position' clutch member 89 into and out of eugageshown in dotted lines in Fig. 7-. Since the ment with theclutch member 90. The clutch parts of the cutting clement must be props. member 90 is rotatably mounted on the oily oiled at all times, it is necessary fto shaft 88 and is connected withbeveled gear provide some means for oiling such parts 90 101 which engages another beveled gear-102 f when in their reversed position as Well aswhich is operatively connected with theme when in their normal position. In the/con tor shaft. In the construction shown, the structionherein shown, this is provided for beveled gear 102 is fastened to thesprocket in the.following manner E'Whcn the cutting v wheel 102- about which {fasses the counectin element is in its normal ori iprightpo sition, 95

chain 101 carrying the cutters 105 whicr the main driving shaft109 for thecutter: make the cutiu the coal or othermaterial. is' i'n the.- position-shown in Fig; 17. 'llhe lonhected with the sprocket wheel is a bearing surfaces are/then between the sleeve downwardly projecting flange or annulus 110 and the sectionj'lll of the beal'i ng' a'nd 106. A fixed part 107 is provided with an beltween the sleeve 1.11 and the section 115 100 n wardly turned flange or annulus 108, 'ofthe bearing and between the bearing w ich projects between the part 106 and the piece. 113 and the .end' of thesectlon ofithe hub of the sprocket wheel 103 and-beveled bearing 115'. "In the construction shown, gear 102, thereby aqting as a shield'to pre- *tliere is loeatedbetwecn the bearing surfaces vent dirt from cutting into the "bearings. .19 1e wearing elements 124. 130th s1des'.of--1 05 1 The sprocket wheel 193 and beveled gear102 t iese wearing elepients nlfBQfl ed plums are l'teyedltoa shaft 109. This shaft has f unollcup 122a wh ch connects with an keyed to it a sleeve 110. Another sleeve 111 il passage 1:59 and an 011 chamber 12 7 'ex-- is also keyed toj'the shaft, said sleeve being; Eelidlnga round the upper end of -the, space-;

in fact, the hub of a beveled gear 112.- Fas-- etweellt 3? 1 bearing t: 110 tened to'the shuft9 between the sleeves 110 =1will t 1 that- 0 --P*. QWD I andl'i'l is a, bearin 'ece 113 which projects tween these pints; When it r a i s h intoan 'o' ening emeen the, sections 114 h gu' g 19 9 1 3 It the p s ia the said shaft and sleeves rotate. This'bear+ 'S ee-Ve 111-and bear n 115; tlr usdillng-nll-llb I p fit a proper be i -i f r th of the hearing-surfaces. The 011 then passes.

parts when the cutting element isyreversed 14 t bolitom l the 9 3 125928 j or turned upside down. vThe beveled ear H 2 112 is operatively com-looted with the s aft When the element-rs ,mversed, the beveled 116 of the motor 117. This connection is gear 112 is at thQtOP-j 1 P f} I 130' preferably made mm h .Some mdubing. openlnglsl then supphes p11 to theoll pas gear. Asherein shown-,t ebeveled $111 112 sageway 132. 'lhe v opening 181 may engages the beveled gear 118 (see ig. 8) closed by the gate 133 when the ollcup lap. connected-with the short shaft 119. A seois got inposition. The oil-.passeszfrom-cup 60 0nd beveledgear 120 is also connectedwith 13 .to passageway 182, thence throughgpen- 1,2, I

this shfltysuch latter beveled gear meshing ings 129 into the receptacle 184- form on with the beveled gear 121 on the armature shaft 116v (see Figs. 8 and 16 l Theheight of the cutter which makes the out in the coal or other matenal maybe varied by moving the cuttin element up or down on its supports as be or'e stated. It will be noted, however, that the cutter arm' 122 projects fronrthe cutting element eccenthe bearing piece Theoils tllen through openings IQQ-intothesflqo'be ee j parts 111 and 115, and when-it 7 the: 3P 1: P s; w mass- 5 l-m i armature shaft.

.o thespacebetween partsllO and 114. It then passes into chamber 127 and out through passage 126. I

The bearingsfor the armature shafts of the motor must also be provided with oiling means which will operate when the element is 1n its 11 right position or in its reversed position. and I have shown one of them in detail in Fig. 1S.' In. this construction there is an oilrece tacle 135 which extends on opposite sides o the armatureshaft. This oil receptacle is provided with two openings 136 and 137. ,When thecutting element is in its up right osition, an oil cu, 138 is connected with t e. opening 136. he oil passes into the oil chamber 135 andthen passes through surface of the.

openings 139 to the bearin Associate with each armature shaft oiling device is a sleeve 140 (see Fig. '16) which has its end nearest the armature bent inwardly so as to catch any oil that may escape from thebearing and prevent it-from-getting onto the commutator or other part of the armature. This oil then escapes through the passageway 142. When the cutting element is reversed, the

- plug 143 is removed from the opening 137 and placed in opening 135 and the oil cup 138 connected with opening 137. The worm 87. and worm gear 86 and the journal of shaft 88 are 'inclosed within a casinglht easing.

into which oil is inserted at the top by lifting the hinged part or door 145 (see Figs. 9 and 16). The part 145 is hinged to a section 146 which 1s removably attached to. the rest of thecasing by means of bolts 147 -(see Fig. 9) The casing section 146 is connected to themain casing by the opening 148 through which the oil There is a simi ar hole at the bott'oinof the main casing which is closed by aplug 149. Whenit is desired to reverse the cutting element the casing section 146 is removed and is placed on the opposite side of thejmain casing, the plug 149 being rcmovedand-bein placed in the other hole. A suitable guar is provided for the cutting device so that the operator cannot accidentally get. against the cutting device and therebyfbe injured. As herein shown, this uard onsists of a guard piece 150 (see i gs. '1-8). The guard piece is. mounted on a supporting rod 151 which passes limited by.

throughsupporting pieces 152 and 1555 on the frameof the cutting. element. 154 is connected at one end with a part'of the frame and at the other end w th a part connected with the guard piece, the torsion of the springtending to normally press the guard piece toward the cutter. The move of the guard piece in this direction is the stop 155 so that it cannot contact with the cutters This be placed on either side of the ment come .into guard may hese two bearings are similar pawl 161.

asses to the main cutter arm, as tl'iei'e are supporting pieces I 152 and 153 on each side thereof. The guard piece 150 engages the face of the coal when r j the cutter arm is in certain of its positions, and being hinged springs away from the cutter arm to permit the relative movement of the cutter arm and the guard piece. This guard piece isshown in various positions in Figs. 16. a

up to a positionin frontfof the wall to be out as shown in Fig. 1, the wheels of the lVhen the machine is in use, it ishnoved.

main frame 1 resting upon the track rails 2 156. The cable 30 then. fastened to a fixed point in front of the machine and Fig. During this cut, it will be seen that there is a. great lateral pressure tending to push the machine oli' ofthe track rails and some means provided for preventing this. .As herein shown, a drum 157 is mounted on the machine and 1 cable 158 is connected with said drum, the other end of the cable being connected to a fixed point 159 at the side of the machine as shown in. Figs. and 3. The drum 157 is pmvidod with the ratchet wheel 1G0 whic.

This ruteh reel is pmvidcd with some muons for turning it. as for one ample, with the openings 162. (see Fig. ii).

By placing a rod in these holes it will be seen that the ratchet wheel and drum may be turned to tighten or loosen the cable 158. 'lhefixed' part "159 is preferably placed "forward a distance about equal to onollal'li thestruightiorwurd-movement of the ma.- chine in making the first cut. This is shown in Fig. 2. i As the machine moves in. it will. be seen that it n'uwcs past this point and the cable 158 therefore varicsin length This cablemust therefore be tightened as the machine moves toward the-fixed point 159 and loosened as it moves away from it during the" lust pantof the cut. This cable 158 takes the lateral strain and {iu'evcuts the machine from being forced sidewise'from the track. i

I have described in detail a particular construction embodying my invention, but it is, of course, evident that the parts may be varied in many particulars without dc,-

parting from-tho spirit of the in ventimo. and. I therefore do not hunt myself to the particular construction shown. In making the initial cut with the ma chine, it is desirable to set an. anchor in the face of the coal. to which the cable 30 is attached. I have illust i'uted in the drawings a device for drilling this hole by means of the machine itself. For this purpose a shaft Ruler-ates with the...

from the main frame 164 (see Figs. 7', 8 and 21) is mounted upon the machine and is operated by the beveled gears 165 from the shaft 5, there being a clutch 166 by means of which the said shaft 164 may be connected or disconnected from the shaft 5. A removable extension device .is adapted to be connected with the shaft 164 so as to rotate therewith, said connection being made in any desired manner as by means of a socket 167 into which the end of the extension device fits. The extension device is provided with the universal joint 168 and a telescopic member conslstmg of a hollow part 169 and a non-c rcular part 170 which slides in and out of said hollow part but which rotates therewith. A boring tool 171 is connected with the end of the extension device for boring the hole. Said extension device is provided with a handle 172 which is free to rotate with relation to the part 170 and by means of which the tool may be controlled. It will be seen that by this device the tool may be moved up and down or sidewise to secure the proper location and may then be used to bore the proper hole.

It'will be noted that in this construction the rearend of the on the side thereof opposite to that from which the front end project and that the relative position of the mo ing' frame and the fixed frame during all. the various movements of the fixed frame is such as to keep the mechanism in a. balanced condition.

The use and operation of my invention are as follows:

When it is desired to use the machine, it is run along the track to a substantially central location in front of the coal to be cut as illustrated in Fig. 1; The cutter is then moved to the the cable 158 connected with the fixed part 159. The motor which runs thecutter is then set in motion and the entire machine 7 is moved forward so as to make the first cut as shown in Fig. 3. The moving frame'is then rocked by its proper motor and the cut completed as shown in Figs. 4,5 and 6.

It'will be seen that by this arran ement the machine may be hel at a fixe point and will yet make a cut with a substantially straight face.

I claim: V

1. A mining machine comprising a base frame, a moving frame mounted thereon having an annular motion stantially parallel with the surface upon which the machine is supported and a cut ting element mounted upon said moving frame, said cutting element provided with a projecting utter arm, a cutter chain movably mountedon said cutter arm, a motor for operating said cutter chain and a separate motor for giving, said moving frame moving frame projects position shown in'Fig. 2 and in a plane subcutting element at different points along" said support, a cutter forming a part of said cutting element and pro ecting eccentrically therefrom, a motor on said cutting element for driving said cutter, said cutting element and motor reversible with relation to said support so as to vary the position of said cutter. 3. A mining machine comprising a base frame, a moving frame mounted thereon, a cutting element carried by" said moving frame, a pivot connecting with said moving frame, said base frame provided-vith two converging and intersecting slots along both of which said pivot is adapted to move and mechanism for moving said moving frame. 4. A mining machine comprising a base frame, a moving frame mounted thereon, a cutting clement .carried by said moving frame, a pivot connected with said moving frame, said base frame provided with two converging slots along both of which said pivot is adapted to move and mechanism-forframe, a pivot connected with said moving frame, said base frame provided with converging slots along which said pivot is adapted to move and mechanism for moving said moving frame, said mechanism comprisinga connecting piece pivotally con- 'nected with the moving frame and the base frame, two toothed pa.rts,-on'e connected with each frame, the teeth engagin and means for driving one ofsaid toothcif parts;

6. A mining machine comprising a base I 7 frame, a movlng frame mounted thereon, a pivot connected with said moving frame, said base frame .pr'ovided withtwo converging and intersecting which said pivot is adapted to move and .mechanism for motving'said movmg framef and a cutting element movably connectedwjth said moving frame.

A mining machine comprising a base frame, a moving frame mounted thereon, a

pivot connected with said moving frame,

said base frame provided with convergin slots along which said pivot is adapted .to move and mechanism for moving'said niov mg frame, said connecting piece pivotally cpnected with the moving frame and the base frame, two

slots along botlr'of mechanism comprising a ment provided with a cutter and meansfor driving one of said toothed element carried by said moving frame, said moved, and means retest:

toothed parts, one connected with each frame, the teeth engaging,

cutting element provided with a cutter and means for" driving said cutter, said means being independent of the first mentioned driving means.

8. A mining machine comprising'a base frame, a moving frame supported thereon,

a cutting element carried by said moving frame, a pivot connected withsaid moving frame. said base frame provided with converging and intersecting slots along which said 'pivot' moves when the moving frame 15 from one slot to the other.

9. A mining machine comprising a base frame. a moving framesupported thereon, a cutting element carried by said moving frame, a pivot connected with said-moving frame, said base frame provided with convergin slots along which said pivot' moves when the moving frame is moved, and means for switching said pivot from one-slot to-the other, and a cleaner associated with said pivot and adapted to cleanthe slotahead of it as the pivot moves along. i

10. A mining machine comprising a base frame, a moving frame carried thereby, a cutting clement carried by said". moving frame, a pivot frame, said base irainc provided With-two converging and intersecting s'lots'extending from the outer faces thereof toward the middle and moetingat the middle and rocking meehanismfor rocking said frame so as to more said pivot back and forth along and meetin at the middle and rockingmeehanism For rocking said frame-so as to move said pivot back and forth along both of said slots, and a cutting element mounted upon said rocking frame, said cutting eleoporating said cutter .-'while the moving frame is being mocked.

12; A mining machine comprising-a base frame, a moving" framezcarrled thereby, a poweractuatedcutter carried b sa d moving frame which eutsb' i alatera movement means for forcing sai cutter into the material to bee-at the full' depth ,of-xth. cut to be made, a pivotvconnectingl the moving Q a motor op- I frame with the.,base frame, eratively connected with said' movingframe so as to rock it 'when V nermost position to move. saidcutter laterallyagainst the material to be cut, to cut and means for arts, a cutting said cutter being'moveddaterally w eatmoving frame is rocke for switching said pivot" .cuts by a lateral movement, means for fo mnected with said moving cutting element carried. by; said piece, two pivots. connected therewith connected with the baseframe and th i with the moving framegal'id a lcoiinet a between the" two .moves. t e cutter 15.111 its 111- said material; and means for pivot to andfrom thefwaof being cut while the"c1utter is mak' lateral cut.

-13. A mining machine comprising bese frame, a moving frame earriedthereli 'a'. chain cutter carried by said -moving V real and exerting ,a lateralfstrain QIFSfiId i moving frame when cutting said c'oalt a 6, pivot connecting the moving ame-withtha' F ase frame, a motor for rocking said -'1 no v ing frame and'means' for guiding said l'pivot to and fr'om the face-of the coal -when'-.the

4 d to feed the chaigl '0 cutter to the material to becut, and a con'n'elltion between the rear part' of the machine and a fixed part toserve as an abutment.

141. A mining machine comprising 'aabase-dframe, wheels upon; 'which'said'frameujs 86.; supported, said wheels adapted to"'-'mova along a track, a moving frame on'the base: frame, a power actuated 'cutting -devie mounted upon said moving frame which ing saidcutter into themateriai'to be the full'depth of the cut to be made, means for imparting angular movement to theme} ing frame to move said eutterlaterall' a when its innermost position against .1; came-. terial to be cut to out said material and tomatic controlling means for automatijeall controlling said angular movement mhile the cutting-device is euttir'rgthefmateria to be cut, so that the outer end of the cutting device is compelled to describe astraiht3," line at the full depth of the out substantifi at right angles ,to the track, upon wh; said wheels rest.

15. A mining machine comprising a. base, frame, a moving frame carried thereby cutting element carried. by said mqv' frame. a cutter arni .projectingfroxrr sar cutting element, a cutter'ehain on snide arm and two flexible connections. said moving frame ad at diiferentpointsjl said flexible connections mova 1e 1 crosswise of the base frameflinoppos rectionsi' 16. A mini'ng machine comprising. frame,. a movi-ng franre mounted the frame. a driving pinion, on jsard, frame,-'teeth ou saidhbase frame witl the teeth of said pinion engage, a connecting frames at a distal re saidpinion about which" said movin g "17. A mining machine-comprising frame, a moving frame mounted thereon, acutting element carried by sa d movmg frame, a driving (pinion on saidmoving frame, teeth on an base frame with whic the teeth of said pinion. enga e, it connecting piece pivotal y connected with both frames-and working about a. fixed connection at ndistancefrom saidpinion, a second center "about which said moving frame moves, said latter center being located ing' piece connecting t nearer the point of resistance than the first mentioned center so as to increase the lever arm and reduce the forces on the teeth of the pinion and the teeth which they engage.

18. A. mining'machine comprising a base 1 frame, a moving frame mounted thereon, a cutting .de'viee mounted on said mloving frame,.a pivot connected with said moving frame, sa d main frame provided with converging an'd intersecting slots which meet near the middle of "the frame, separated guiding pieces at the point where said slots meet, said pivot adapted to work in said slots, a driving pinion at a distance from said pivot connecting with the moving frame, teeth on the main frame engaged by the teeth of said drivin pinion, it connectfie base frame and ivot the moving frame, whereby the said the moves along one of said slots towar .meeting point and then moves along the other'slofl away from the meeting point ,when the driving pinion is operated.

' frame which cuts. by a lateral movement,

19. A mining machine co'm rising a base frame, wheels upr'in which sai ,liase frame is mounted, a moving. frame mounted on the base frame, a 'motor mounted on the moving frame, moving mechanism for moving the moving frame with relation to the base frame While the machine is being operated an operative connection between said moving mechanism and said motor, driving mechanism for the wheels of said 'main frame, an operative connection between said motor and said driving mechanism, and a safety device. for'automatically preventing the con'nection between the motor and the said drivin mechanism when the motor is connected with said moving mechanism.

. 20. A mining machine 'comprising'a baseframe, supported at a series of separated points, a moving frame mounted on said base frame, a cutter connected with said moving means for forcing the cutter into the material to be cut'the full depth of the cut to be made,

moving means connected wit "a fixed point on the movingframe for moving said point in a predetermined path, and means for constraining themoving frame so that the ends thereof movejt'iafisversely of themain frame in bpposite directions and longitudinally thereof in. the same direction, so as to keep the of direction'of the center of mass of =.th e machine'within said separated oints of support, during all the various p "tionsof' gal euttemthe movement. of "said. moving verging n pivot on said moving frame, a slot in the main frame in which said pivot moves to constrain the outer end of the cutter to move in a substantially straight line, and means ahead of said pivot for cleaning the slot as the pivot moves along the same.

' 22. A mining machine comprising a base frame, it movin" frame mounted thereon, a cutting clcn'ion carried by 'said moving frame, av pivot connected with said moving frame, said base frame provided with converging slots along which said pivot is adapted to move, mechanism for moving said moving fran'lc and a cleaning device for cleaning said slots in order that the pivot may freely pass therealong, said cleaning device comprising two projecting arms-and means for moving said arms as the. cleaner passes from one slot to the other so as to bring them in proper relation lothe faces of the slot.

, 23. A. mining machine comprising a base frame, a moving frame mounted thereon, a cutting element carried by said moving frame, a pivot connected with said moving frame, said base frame provided with two substantially horizontal converging slots along which said pivot is. adapted to move, said pivot passing from one slot to the other, mechanism for moving said moving frame and a cleaning device for cleaning said slots in order that the pivot may freely pass therealong, said cleaning device comprising apart adapted to pass along the slot, said part movably connected with said pivot.

24:. A mining machine comprising a. base frame, a moving frame mounted thereon, av cutting element. carried b said moving frame, a i'vot connected w th said moving frame, said base frame provided with conslots along which said pivot is to move, mechanism for moving may freely pass. thercalong, said cleaning device comprising a part'adapte'dto pass along the slot, said part movably connected with said pivot', a controlling device connected \therewith adapted to move the cleaner as it passes'from one slot to the other so as to bring it ihto proper relationgwith the slot in owhich it passes.

it). Amining machine comprising a main' frame, a moving frame supported thereby;

means for movin frame longltudina y of 'the main frame and crosswise of the main frame 1n one direc- .tion',' and aconnection between the main frame and the other end of-lthe moving one end ofsaid moving -for anchoring it. outside of the movmg frame for simultaneously guiding said other end of said moving frame crosswise of said main frame in the omiosite direction. and longitudinally of said main frame in the same dircctioma cutting element carried by said movingframe, a cutter arm projecting therefrom, a cutter-chain connected with said cutter arm, the cutter chain being fed to the coal by the rocking of said moving frame.

26. A' mining machine comprising a fume, supports thereon, a cutting element connected with said supports and adapted to move up and down thereon, a cutter arm projecting from the top of said cutting ele ment, a cutter chain on said cutter arm, means for moving said cutting element and supports to force the cutting chain against the coal during its cutting movement, means for moving said cutting element up and down along said supports to vary the point at which the cutting arm. engages the mate rial to hecnt, and means for inverting said cutting= element so that the cutter arm projects from the bottom thereof, whereby the vertical range of the cutter arm is increased.

:27. A mining machine comprising amoving frame, a cutter mounted thereon, means for moving said cutter intothe face of the material to be cut in adirection transverse thereto, a guard pivoted to the moving frame and normally extending along the cutter, and means for retaining the guard in protective relation with respect to. the

cutter while the cutter enters into the mes .terial to be out. v 1

28. A mining machine comprising a moving frame, a cutter mounted thereon, means for moving said cutter into the face of the material to be cut in a direction transverse thereto, a guard pivoted, to the moving frame and normally extending along the cutter, means for elastically pressin'g said guard toward said cutter so as to retain the guard in protective relation with respect to the cutter while the cutter enters lnto the material to'be cut, and a ,stop device for supporting frame,

limiting the movement of the guard toward the cutter so as to prevent it from coming in contact therewith. i

29. A mining machine comprising a supporting frame, a cutter supported on said two independent feedlng mechanisms for feedingsaid cutter to the material to be out, one ofsaid feeding mech anisms comprising a flexible element, means frame, the other feeding 'mechanism comprising a: rack and pinion, one of said feed- In mechanisms feeding the cutter forward substantially parallel with tself, the other feeding mechanism feeding the cutter to the material to be out by bringing the cutter into new angular positions, and a single motor for actuat ng mechunismsi- [both of said feeding clement carried by" said moving frame, a

pivot connected with said moving frame, means for moving said moving frame so as to move said pivot, said base provided with a guiding device along which said pivot is constrained to move, said guiding device comprising two disconnected faces adapted to successively receive the pressure ofthe .plvot.

31. A mining machine comprising a base, a moving frame mounted thereon, a cutting element carried'by saiclvmoving frame, a pivot connected with said moving frame, means for moving said m'oving frame so as to more said pivot, said base provided with a guiding device along which said pivot is constraii'ied to move, said guiding device comprising two disconnected faces'adapted to successively receive the pressure of the pivot, and means for switching the pivot from one of said faces to the other.

mining machine comprising abuse, a moving frame mounted thereon, a cutting element carried by said moving frame, a connecting piece pivotally connected with both, the bas'e'and the frame and swinging about a center fixed with reference to'the base, a power device between said base and said moving frame and connectcdwith-both so as to produce relative motion between them, a moving pivotal connection about which the moving frame moves, means for constraining the movement of'said ivotal connection along a predeterminedpat said pivotal connection being located nearer the point of resistance than, the first mentioned center so as to reduce the pressure on said power device.

33. A mining machine comprising a main frame, a moving frame mounted thereon.

frame, a moving frame mounted thereon, separated vertically ad ustable upstanding supports connected with said movmg frame,

a cuttingelement located between said sup-- ports and adjustably connected therewith so that it"may be moved vup and down there- A mining machine comprising a main frame, a vmoving frame mounted thereon, separated vertically; adjustable upstanding supports on'said moving, frame, rocks on said supports, guideslefi said supports, a

ownwardly to vary eir ends, where ions connected with said cutting element and engaging the said racks, means for driving' said pimons to raise and lower the cutting element,,guides on said cutting element engug ing the guides on said supports.

36. A mining machine comprising a main frame, a moving frame mounted thereon, separated vertically adjustable upstanding su orts on said moving frame, racks on sun supports, guides on said supports, a cutting element between said supports, pinions connected with said cutting element. and engaging the said racks, means for driving said pinions to raise and lower the cutting element, guides on said cutting element engaging the guides on said supports, said supports made in separated sections and movable with relation to each (:1 her so that the upper parts thereof may be lowered, and means for rigidly connecting said sections together soitliat the portions of the guides on the sections will be in alinentent.

37. A mining machine comprising a main frame, a moving frame, upstanding supports connected with said moving firame, a cutting element adjustably mounted upon said supports so that it may be moved to different horizontal planes, a pivotal connection between tluymoving frame and said main frame, means for moving said moving frame about sa id pivotal cormeetim'i, and tor simul tancously moving said pivotal connection.

38. A mining machine coi'nprieing a main frame, a moving frame mounted upon said main frame, a cutting element mounted upon said moving frame and provided with a projecting cutter arm, a cutter chain on said cutter arm, a sprocket wheel for driving. said cutter chain, means for rocking said cutter arm about a point intermediate said sprocket. wheel and the outer end. of said cutter arm and for moving said point with relation to the face of the material to be cut, whereby a substantially straight out is produced.

In testimony whereof, I allix my signature in the presence of ,two nitnesses this th day of April, 1914.

CHARLES l). DAVIS.

W itnesses:

GnNnva Hlsrrir, Lannm. M. l)UiH';MUH. 

